I certainly did not intend to imply two groups, sorry.
For now, Rev 7:9-17 is one group a great multitude which no one could count,...who come out of the (30) great tribulation...and (42) God will wipe every tear from their eyes." These are the raptured saints, in my pre-wrath rapture viewpoint.
Is this the same group mentioned in I Thess 4?